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SangayThongpatsangCells.pdf (Organelles (Endoplasmic reticulum (Rough…
SangayThongpatsangCells.pdf
Major Components of Cell
Nuclues
Control Center
Cytoplasm
Inside plasma membrane, outside of nucleus, most cellular activities occur here
Cell Membrane
Acts as security gate chooses whats goes in or out
Passive Transport
Movement of ions without use of energy
Active Transport
Movement against concentration gradient, requires energy
Exocytosis
contents of a cell vacuole are released to the exterior
Endocytosis
Phagocytosis
Cell eating, Cell engulfs large particles.
Pinocytosis
Drinks up extracellular substances, non selective
Receptor mediated endocytosis
Selective, requires protein. Extracellular substances enter cell by binding to specific receptors.
Organelles
Ribosomes
Assembly line, produce proteins
Golgi apparatus
Packages proteins for use within or outside of cell
Plasma membrane
forms boundary of cells selectively chooses what goes in or out
Lysosomes
Break down used proteins and other cellular debris
Peroxisomes
Toxic waste treatment facility
Mitochondria
Power Plant of cell, make energy
Nucleus
Directs operation of the cell
Endoplasmic reticulum
Rough
Produces proteins
Smooth
Metabolizes lipids and stores calcium
Cytoskeletal Elements
Maintains cell shape and structure and transport materials within the cell